Xref: news.cs.tut.fi aus.radio:448 rec.radio.amateur.misc:52615 rec.radio.info:5171 Newsgroups: aus.radio,ips.solar.activity,rec.radio.amateur.misc,rec.radio.info Path: news.cs.tut.fi!news.funet.fi!sunic!trane.uninett.no!eunet.no!nuug!EU.net!howland.reston.ans.net!agate!msuinfo!harbinger.cc.monash.edu.au!news.cs.su.oz.au!metro!ipso!rwc From: rwc@flare.syd.ips.oz.au (Regional Warning Centre) Subject: IPS Daily Report - 31 May 94 Message-ID: <1994May31.231850.29327@ips.oz.au> Followup-To: aus.radio,rec.radio.amateur.misc Sender: news@ips.oz.au (Usenet News) Nntp-Posting-Host: flare.syd.ips.oz.au Organization: IPS Radio and Space Services. Sydney, Australia. Date: Tue, 31 May 1994 23:18:50 GMT Approved: rec-radio-info@ve6mgs.ampr.ab.ca Lines: 90 SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT ISSUED AT 31/2330Z MAY 1994 BY IPS RADIO AND SPACE SERVICES FROM THE REGIONAL WARNING CENTRE (RWC), SYDNEY. SUMMARY FOR 31 MAY AND FORECAST UP TO 3 JUNE IPS Warning 15 was issued on 26 May and is current for interval 28 May to 7 June. ----------------------------------------------------------- 1A. SOLAR SUMMARY Activity: very low Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number : 069/003 1B. SOLAR FORECAST 01 June 02 June 03 June Activity Very low Very low Very low Fadeouts None expected None expected None expected Forecast 10.7 cm flux/Equivalent Sunspot Number : 070/005 1C. SOLAR COMMENT None. ----------------------------------------------------------- 2A. MAGNETIC SUMMARY Geomagnetic field at Learmonth: unsettled to minor storm. Estimated Indices : A K Observed A Index 30 May Learmonth 25 3435 4344 Fredericksburg 30 35 Planetary 33 44 Observed Kp for 30 May: 5755 4444 2B. MAGNETIC FORECAST DATE Ap CONDITIONS 01 Jun 35 Unsettled to minor storm. 02 Jun 35 Unsettled to minor storm. 03 Jun 30 Unsettled to minor storm. 2C. MAGNETIC COMMENT disturbances expected until 7 June due to a coronal hole. 3A. GLOBAL HF PROPAGATION SUMMARY LATITUDE BAND DATE LOW MIDDLE HIGH 31 May normal fair-normal fair PCA Event : None. 3B. GLOBAL HF PROPAGATION FORECAST LATITUDE BAND DATE LOW MIDDLE HIGH 01 Jun normal normal-fair fair 02 Jun normal normal-fair fair 03 Jun normal normal fair 3C. GLOBAL HF PROPAGATION COMMENT NONE. ----------------------------------------------------------- 4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY MUFs at Sydney were near predicted monthly values to 20% depressed, with spread F observed during local night. Observed T index for 31 May: 17 Predicted Monthly T Index for May is 30. 4B. AUSTRALIAN REGION IONOSPHERIC FORECAST DATE T-index MUFs 01 Jun 15 Near predicted monthly values to 20% depressed. 02 Jun 15 Near predicted monthly values to 20% depressed. 03 Jun 20 Near predicted monthly values to 15% depressed. 4C. AUSTRALIAN REGION COMMENT spread F conditions expected during local night. Degraded HF comms expected until 8 June due to a well positioned coronal hole. -- IPS Regional Warning Centre, Sydney |IPS Radio and Space Services email: rwc@ips.oz.au fax: +61 2 4148331 |PO Box 5606 RWC Duty Forecaster tel: +61 2 4148329 |West Chatswood NSW 2057 Recorded Message tel: +61 2 4148330 |AUSTRALIA